Vaessen, HAMGWagstaffe, PJLindsey, AS2025-03-112025-03-111988https://rivm.openrepository.com/handle/10029/631307Reference materials for PAHs in foodstuffs: results of a preliminary intercomparison of methods in experienced laboratories.ArticleFresenius Z Anal Chem 1988; 332:325-322025-03-11